Home / 3,130.94-4,311.98-2,420.16

Finding the Fourth Proportional to 3,130.94, 4,311.98 and 2,420.16

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Solution

The fourth proportional to 3,130.94, 4,311.98 and 2,420.16 is: 3,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.94 : 4,311.98 = 2,420.16 : x
  2. Step 2: Convert to fraction form
    3,130.94/4,311.98 = 2,420.16/x
  3. Step 3: Cross multiply
    3,130.94x = 4,311.98 × 2,420.16
  4. Step 4: Simplify right side
    3,130.94x = 10,435,669.42
  5. Step 5: Solve for x
    x = 10,435,669.42/3,130.94
  6. Step 6: Final answer
    x = 3,333.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.